Summary
The Chilean National Electric System is rapidly transitioning towards high penetration of inverter-based resources, which leads to the displacement of synchronous generation. This evolution can reduce short-circuit strength and inertia, increasing the likelihood of weak-grid behaviour and control interactions during disturbances, while the national technical framework for IBR performance continues to evolve.
Read more Read lessThis paper presents a methodological framework that links long-term economic dispatch processing—used to identify the most demanding operating conditions—with ESCR/SCRIF,
RMS-domain dynamic simulations, and detailed electromagnetic transient (EMT) studies.
Results show that economically optimal daytime conditions in spring–summer lead to clearly unacceptable ESCR levels across sensitive areas, whereas nighttime conditions are generally more robust. Screening indicates that reaching ESCR values close to the minimum reference requires either widespread grid-forming (GFM) capability across the BESS portfolio, a significant amount of synchronous condensers (≈3 GVA), or operational measures based on forced dispatch and IBR constraints, implying substantial curtailment of PV injection and BESS charging (several GW). Inertia screening and RMS validation indicate that ROCOF for a severe
N-1 imbalance can exceed fast load-shedding criteria unless additional inertial support is introduced; for GFM BESS this implies a 30–50% reserve/oversizing margin. EMT results validate 2030 reinforcement magnitudes and highlight added challenges in 2032 with the highvoltage direct current (HVDC) line-commutated converter (LCC) Kimal–Lo Aguirre link.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | C4_12325_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Colombia |
| Study committees |
|
| File size | 2 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
PERRONE David E. - Grupo Estudios Electricos; HERRERA Jorge - Grupo Estudios Electricos; HARTUNG Paola - Grupo Estudios Electricos; ALVAREZ Alan J. - Grupo Estudios Electricos; BUSTOS Daniella - Grupo Estudios Electricos
Keywords
BESS, EMT Simulations, GFM Inverters, HVDC Integration, IBR Integration, Inertia, Short Circuit Ratio, Synchronous Condensers, System Strength, Weak Grids
